Hi Dan,
This is a funny community section to pose questions on the SOHO 97
It's End of Like annoucement was a wee while ago, in June 2006.
http://www.cisco.com/en/US/prod/collateral/routers/ps4866/prod_end-of-life_notice0900aecd804d5ad6.html
As you appreciate, the replacement for the SOHO97, the 800 series product supported IPv6.
I have taken the liberty , in relation to soho97, to copy a section from the IOS software release notes from the following URL;
http://www.cisco.com/en/US/products/hw/routers/ps221/prod_bulletin09186a00801ffda1.html#wp1003249
It states the following in relation to IOS version12.3(4)XG
"Baseline IPv6
Supported Platforms: Cisco 831, 836, and 837 Series Routers; Plus Images Only
Support of the baseline initiatives IPv6 features—providing IPv6 support to all Cisco 830 Series platforms. Further details in release notes."
Like yourself, no where can i see a reference to the SOHO 97 product supporting IPv6.
regards Dave